Detections
Analytics
WN25-CC-000260 - Windows Server 2025 Windows Update must not obtain updates from other PCs on the internet.
Information
Windows Update can obtain updates from additional sources instead of Microsoft. In addition to Microsoft, updates can be obtained from and sent to PCs on the local network as well as on the internet. This is part of the Windows Update trusted process; however, to minimize outside exposure, obtaining updates from or sending to systems on the internet must be prevented.Solution
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Delivery Optimization >> Download Mode to 'Enabled' with any option except 'Internet' selected.Acceptable selections include:
Bypass (100)
Group (2)
HTTP only (0)
LAN (1)
Simple (99)
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Windows_Server_2025_V1R4_STIG.zip
Item Details
Audit Name: DISA Microsoft Windows Server 2025 STIG v1r4
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|III, CCI|CCI-000366, Rule-ID|SV-278104r1268251_rule, STIG-ID|WN25-CC-000260, Vuln-ID|V-278104
Plugin: Windows
Control ID: 5a040a3f11ce8188613303a63d4fefb7d3eacacc06c432858317445a1a73b4fb